/*
 * Copyright 2006-2007 S W McIlroy
 * Licensed  under the  Apache License,  Version 2.0  (the "License");
 * you may not use  this file  except in  compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed  under the  License is distributed on an "AS IS" BASIS,
 * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
 * implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.mockfu;

/**
 * A multiplicity specifies the anticipated number of method invocations for an expectation in the
 * form of an integer range.
 */
class Multiplicity
{

    private final int minimum;
    private final int maximum;

    public Multiplicity( int minimum, int maximum )
    {
        this.minimum = minimum;
        this.maximum = maximum;
    }

    public boolean contains( int count )
    {
        return minimum <= count && maximum >= count;
    }

    public boolean isExceeded( int count )
    {
        return count > maximum;
    }

    public boolean isAllows()
    {
        return minimum == 0 && maximum == Integer.MAX_VALUE;
    }

    @Override
    public String toString()
    {
        if( minimum == maximum )
            return "exactly " + (minimum == 1 ? "once" : minimum + " times");
        if( minimum == 0 )
        {
            if( maximum == Integer.MAX_VALUE )
                return "any times";
            return "at most " + maximum + " times";
        }
        if( maximum == Integer.MAX_VALUE )
            return "at least " + (minimum == 1 ? "once" : minimum + " times");
        return "between " + minimum + " and " + maximum + " times";
    }
}
